Child ; Diarrhea ; diagnosis ; therapy ; Humans ; Practice Guidelines as Topic

Background The retina microglia play a eliminating effect on apoptotie cells in the neural retinal layer of normal rats during postnatal development.Milk fat globule epidermal growth factor 8(MFG.E8)can combine specifically with phosphatidylinositol serine of the surface of apoptotie cells and enhance macrophage phagoeytosis of apoptotic cells.Objective Present study was to evaluate the localization and expression of MFG-E8 and its relevant cytokines in the neural retinal layer of normal rats during postnatal development Methods Normal royal college of surgeon(RCS)rats were divided into P0,P3,P7,Pi4,P30,P45 groups according to their postnatal days,and the 30-day-old RCS rats(2 rats)served as controls.Double stain of M FG.E8 and microglial cells marker(CD11b)was performed by immunofluorescence.Expressions of MFG-E8,integrin β5,CD11b and interleukin-6(IL-6)mRNA in the neural retina were analyzed by real-time quantitative reverse transcription polymerase chain reaction(RT-PCR).The utilization of animals complied with the Regulation for the Administration of Affair Concerning Experimental Animals by State and Science and Technology Commission.Results MFG-E8 and CD11b were positively co-expressed in retinal ganglion cell layer and external plexiform layer with the green fluorescence for FITC-labeled IgG and red fluorescence for cy3-labeled lgG respectively in normal adult rats.RT-PCR showed that the mRNA of MFG-E8,integrin 85,CD11b and IL-6 was detectable at P0 rats.The expression level of these eytokines began to rise fterward and reached peak value at P14 rats and then declined gradually,showing significant differences among different ages groups in various cytokines mRNA expression(all P<0.05).Conclusion MFG-E8 can be specifically expressed in the neural layer of retina microglia in RCS rat.

The gene which encodes (R)-specific carbonyl reductase(rCR) from Candida parapsilosis CCTCC M203011 was cloned.The cloned sequence includes an open reading frame (ORF) consisting of 1011bp, encoding a protein of 336 amino acids, with a molecular weight of 35.9 kD.The nucleotide sequence showed 99% similarity to those of the other members of the alcohol dehydrogenase superfamily.A recombinant Escherichia coli JM109 strain harboring the expression plasmid, produced (R)-1-phenyl-1,2-ethanediol(100%e.e,80.4%yield) from ?-hydroxyacetophenone without any additive to regenerate NAD~ + from NADH.

Objective To explore the prevalence and influential factors of chronic respiratory system diseases among resi-dents over 1 5 years old in Hubei province and provide evidence for disease prevention.Methods During October to November in 2013,through stratified cluster sampling,we sampled 20 cities or counties.The survey included the the general condition of family, individual,chronic diseases.Results A total of 28 563 residents answered the questionnaire and 423 of them reported chronic re-spiratory system diseases by themselves.The prevalence rate was 14.8‰.These included 229 cases with COPD(54.1%),44 cases with asthma(10.4%),35 cases with chronic pharyngolaryngitis(8.3%)and 1 1 5 cases with other chronic respiratory system disea-ses(27.2%).In urban and rural area,the prevalence rate were 13.6‰ and 1 5.7‰ respectively.Multivariate logistic analysis showed that gender,age,economic status and medical insurance are influential factors of chronic respiratory system diseases.Conclusion Prevalence rate of chronic respiratory system diseases among residents over 1 5 years old in Hubei province was slightly increased and disease control measures should be brought out.

Objective: Systemic sclerosis(SSC)is a remarkably systemic heterogeneous connective tissue disease with many organs involved.The heart is one of the major organs involved,carrying the threat of sudden cardiac death,especially in diffuse cutaneous SSc.This review summarizes the pathophysiology,types,new diagnostic approaches,and imaging and novel therapies of primary cardiac complications while underlining the effects of recently developed non-contrast cardiovascular magnetic resonance(CMR)in early diagnosis.Data sources:Medline and Embase were searched for articles published up to July 2019.A combination of Medical Subject Headings(MeSH)terms and keywords pertaining to SSC("Scleroderma,Systemic" OR "Systemic sclerosis" OR" SSc"),AND cardiology("cardiology" OR "heart" OR "cardiac")were applied to the search strategies.Study selection: Literature was mainly printed in English and Chinese about cardiac complications in systemic sclerosis.After selected simply on the title and abstract,the articles were included for the full text.Article type was not limited.Results: Relevant cardiac manifestations are complex,including arrhythmias,pericardial effusion,myocardial dysfunction,and valvular diseases.Even though the symptoms of cardiac complications are well known,unfortunately,they appear to be poor prognostic factors.As systemic sclerosis with cardiac complications has a high mortality rate and patients might have a poor quality of life,it is essential to promote early diagnosis and treatment.With the advent of non-invasive imaging techniques,such as CMR,early diagnosis of cardiac complications in SSC is becoming more effective.Conclusions: Cardiac complications play an essential role in SSC and carry the threat of sudden cardiac death.More basic and clinical studies are warranted to develop better management of cardiac involvement in patients with SSc.

10.3969/j.issn.2095-4344.2013.24.015

BACKGROUND:In vitro studies have demonstrated that basic fibroblast growth factor (bFGF) promote the differentiation of bone marrow mesenchymal stem cells (BMSCs) into cardiomyocyte-like cells. However, it is unclear whether coronary venous retroperfusion of bFGF stimulates BMSCs differentiation in vivo. OBJECTIVE:To evaluate the effects of coronary venous retroperfusion of bFGF on BMSCs differentiation in vivo. METHODS:BMSCs from 12 dogs were isolated by density gradient centrifugation and expanded in vitro. These cells were transfected by enhanced green fluorescence protein (EGFP) lentiviral vector and the transfection efficiency was analyzed. Acute myocardial infarction was induced by ligation of left anterior descending coronary artery. After 1 week, 10 survival animals were randomized to BMSCs group (n=5) and bFGF+BMSCs group (n=5). bFGF-and EGFP-positive BMSCs were reversely infused via coronary vein using over-the-wire bal oon catheter. One week after infusion, the number of EGFP-positive cells co-staining factor VIII and troponin I was compared between the two groups by immunofluorescence method. RESULTS AND CONCLUSION:BMSCs were successful y transfected by EGFP and the transfection efficiency was 85%. Immunofluorescence showed that EGFP-positive BMSCs were observed in 23.5%of slides. There were more EGFP-positive cells co-staining VIII and troponin I in the bFGF+BMSCs group than in the BMSCs group (P<0.05). Thus, the coronary venous retroperfusion of bFGF enhances the differentiation of BMSCs into vascular endothelial cells and cardiomyocytes. Combined delivery of bFGF and BMSCs can exert a synergistic effect to promote cardiac repair.

Objective To investigate whether mesenchymal stem cells can promote the recovery of acute renal tubular damage induced by mercuric chloride and to explore its possible mechanism.Methods Acute renal failure rat model was established by intraperitoneal injection of mercuric chloride.SD rats were randomly divided into three groups which were MSCs injection group, saline infusion group and normal control group.Seven days later,the changes of rat weight,survival,renal function and pathology were observed;PCNA,ED-1 and GFP were detected by immunohistochemistry; The expression of cytokines in kidney and the distribution of GFP plasmid-transfected MSCs in kidney were examined by RT-PCR.Results MSCs infusion ameliorated the decline of rat weight,survival, renal function,and pathological changes.PCNA and ED-1 positive cells in MSCs group were fewer than those in saline group.Expression of growth factors EGF,PDGF,HGF were obviously up- regulated and pre-inflammatory cytokines TNF-?was significantly reduced in MSCs-treated kidneys. GFP-labelled MSCs occurred occasionally in renal interstitium of MSCs-treated rats,but not in renal tubules.Conclusions Bone marrow mesenchymal stem cells can promote the recovery of acute renal tubular epithelial cells damage caused by mercuric chloride.The mechanism may partly depend on regulating the excretion of cytokines in renal microenvironment rather than completely depend on their differentiation to tubular cells.

Academic Dissertations as Topic ; Epidemiologic Methods ; Forecasting

Abstract: Objective　To analyze the survival status of HIV/AIDS patients aged above 50 years receiving antiviral therapy (ART) in Shanxi Province from 2011 to 2019, and to provide evidence for further improvement of antiviral therapy. Methods　Basic information and follow-up information of HIV/AIDS patients aged above 50 years who first received HIV/AIDS antiviral therapy in Shanxi Province from 2011 to 2019 were collected. Excel database was established and SPSS23.0 software was used for analysis. Retrospective cohort study was conducted. Cox proportional risk regression model was used to analyze the factors influencing survival time. Results　A total of 1 183 subjects were included, of which 172 died, including 84(48.84%) from other causes, 74(43.02%) AIDS-related death and 14 (8.14%) from accidents, suicides and undetermined deaths. Setting AIDS-related deaths as an outcome event, life table analysis showed that the cumulative survival rates at 1, 3, 5, 7 and 9 years after receiving ART were 96.61%, 93.59%, 90.35%, 87.57% and 83.44%, respectively. Multivariate Cox proportional risk model analysis showed that the risk of death in patients aged 60-<70 years group and over 70 age group was 2.53 times (95%CI: 1.51-4.23) and 3.59 times (95%CI: 1.74-7.40) for patients aged the 50-<60 group , respectively. The risk of death in patients with baseline CD4+T lymphocyte (CD4) counts of ≥200/mm3, 50-<200 /mm3 was 0.22 times (95%CI: 0.12-0.41) and 0.37 times (95%CI: 0.21-0.67) for patients with CD4+T lymphocyte counts of <50/mm3. The risk of death in patients with opportunistic infections at baseline was 1.99 times (95%CI: 1.16-3.39) for patients without baseline opportunistic infections. Conclusions　The survival rate of HIV/AIDS patients aged above 50 who received antiviral therapy (ART) in Shanxi Province from 2011 to 2019 was relatively high. To further improve the quality of antiviral treatment in our province, the strategy of "early detection and early treatment" should be continued and improved in the future, and information collection of specific causes of non-AIDS-related deaths among this population should be further strengthened.